Door lock



March 4, 1941. w ANDERsoN 2,233,828

1209a LOCK FiledJan. 15, 1940 2 Sheets-Sheet 1' INVENTOR ATTO R N EYS March 4-, 1941. T. w. ANDERSON DOOR LOCK Filed Jan. 15, 1940 2 Sheets-Sheet 2 ATTO R N EYS Patented Mar. 4, 1941 UNITED STATES PATENT OFFICE 6 Claims.

This invention relates to door locks, and its general object is to provide a lock that includes a pair of knobs'having pivotally mounted shanks associated with a spring pressed looking or latching bolt for moving the same to released position upon rocking either knob.

An important object is to provide a door lock that includes pivotally mounted knob shanks for the purpose set forth, and the pivot of the shank of one knob is rotatably mounted about a ninety degree angle, while the pivot of the shank of the other knob is fixed, but of course allows rocking movement thereof, and the shanks are constructed and associated with each other in a manner so that when the first knob is turned to one of its positions, either knob can be rocked for moving the latching bolt to released position, but when turned to its other position, both knobs are held against rocking movement, with the bolt in latched position.

Another object is to provide a door lock including the features mentioned, and also key actuated means mounted in the knob of the shank having the fixed pivot for turning the shank of the other knob, by the use of a key, thus it will be seen from the foregoing, that the door can be locked and unlocked from one side by the use of a key only and from the other side, without the key, or in other words, merely by turning 00 the knob.

A further object is to provide a door lock that includes a bolt having a pivoted cam head to facilitate the application and removal thereof with respect to its keeper or strike plate and the knobs are shaped to provide convenient gripping means to facilitate rocking the same for moving the bolt to its respective positions.

A still further object is to provide a door lock, that is simple in construction, inexpensive 40 to manufacture, can be installed in the same manner as the conventional double knob lock, and is extremely eiiicient in operation, use and service.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a top plan view illustrating my 55: lock installed in a door, with parts thereof in full and dotted lines and the jamb, frame and strike plate in cross section.

Figure 2 is a view looking toward the free edge of thedoor and illustrates the knobs in normal position and arrows indicating the direction of 5 movement thereof when rocked on the pivots of their shanks.

Figure 3 is a sectional view taken approximately on line 33 of Figure 2, looking in the direction of the arrows.

Figure 4 is a sectional view taken approximately on line 44 of Figure 2, looking in the direction of the arrows, with the bolt in normal or latched position.

Figure 5 is a sectional view somewhat like 15 Figure 4, with the bolt in unlatched position.

Figure 6 is a perspective View of the bolt with the head thereof removed, and its actuating member applied thereto for moving the same against the action of its spring.

Figure '7 is a vertical sectional view illustrating parts in elevation and the knobs together with the associated elements thereof in normal position in full lines and in rocked position in dotted lines together'with the key actuated means for locking and unlocking the door from the outer side thereof.

Figure 8 is a sectional view taken approximately on line 88 of Figure 7, looking in the direction of the arrows.

Figure 9 is a sectional View taken approximately on line 9--9 of Figure 7, looking inthe direction of the arrows.

Figure 10 is a vertical sectional view somewhat similar to Figure '7, with the parts turned to locked position.

Referring to the drawings in detail, it will be noted that I have illustrated a lock for an outside door A of a house or the like, in that the key actuated means is included therein, as such may be eliminated when the lock is constructed for an inside door. In any event the door is provided with a frame B and a jamb C, with a strike plate I of the usual construction, fixed to the frame as. clearly shown in Figure 1.

The lock in the form shown includes the usual narrow casing 2 that may be provided with a detachable side wall, but in any event is shown as being mounted in a mortise within the door and having an open front, closed by a plate 3 fixed to extensions 4 formed on the casing, by screws 5 that likewise secure the casing within the mortise, as best shown in Figure 4.

The plate 3 is provided with a single opening and is distinguished in that respect from the closure plates of the usual lock or latch casings. Slidably mounted in the casing is a locking or latching bolt member that includes a relatively thin forward horizontally disposed portion 6 movable through the opening of the closure plate and has pivotally connected to the outer end thereof a cam head I that is likewise pivoted to ears 8 struck from the closure plate and extending inwardly therefrom. Formed on the portion 6 are rearwardly directed diverging arms 9 that have formed on the rear ends thereof flat parallel portions l slidably mounted on the upper and lower walls of the casing, and the rear ends of the portions Ii! are inturned at right angles thereto to provide flanges I I,

Formed on the bolt member at the. juncture of the arms 9 with the forward portion 6 is a laterally directed abutment lug l 2' .01. one, end convolution of a coil spring I3 that has its. opp o,

site end convolution engaged with a bracket l4 fixed to the side wall of the casing, so that the. spring normally holds the bolt member with its head in latching position within the keeper-opening of the strike plate, as clearly shown in Figure 1.

The actuating member for moving the bolt member against the action of the spring includes a forward wall l5having the flanges l l engaged with the rear face thereof, and formed on the side edges of the forward wall l5 are rearwardly; directed substantially semi-circular walls I6; hav ing rectangular openings ll therein that are disposed in registration with each other, and with openings in the side walls of the casing, as well as in the door, as best shown in Figure 7. The actuating member is pivotally connected to the sidewalls of the casing for swinging movement, so that it can exert pressure on either of the flanges ll when swung on its pivot, for drawing the bolt member against the action of the spring I3, or in other words to released position, as clearly shown in Figure 5.

Fixed to the opposite sides of the door by screws [1, are escutcheon plates l8 and N! that are likewisefixed to each other by a screw bolt, Z ll threaded within aboss 2| formed. on the inner. face of the plate l8 that is secured to the outer; side of thedoor, and the screw bolthas a kerfed headcountersunk in the otherplate l9. By that construction, it will be obvious that the plate.

I31 cannot be removed to gain access to the lock from the outside. Theescutcheon plates, have. openings therein registering with the openings. in the door and side walls, of the casing, and

' extendingoutwardly from the escutcheonv plate.

[8 for disposal upon diametrically oppQsite sides of the opening thereof, are ears 22. The opening of the plate I9-is provided with an outwardlyv directed. marginal flange 23, as well as has a. washer like member 24 secured thereto about. the opening to cooperate with the flange 23 to, provide an annular guide having slidably mount-, elitherein, a flat ring 25, with parallel ears 26 extending outwardly therefrom.

Extending through the ring 25. for disposal.

within the casing, as well as in the rectangular opening of one of the walls N5 of the bolt actuating member for moving the latter on its pivot, is

a one piece shank 21 for aknob 28, the-shank,

through the opening inthe p1ate.. 8,iis.the shank.

301 for the other knob 3| and the shank 30 is pivoted between the cars 22 by a pivot pin 32, for rocking movement. The knobs are preferably of substantially cylindrical formation in the form as shown in order to provide convenient gripping means to facilitate rocking the same, as will be apparent upon inspection of Figure 1, which illustrates the parts in normal position, consequently the knob 28 is disposed in a horizontal plane andthe knob. 3| is permanently disposed accordingly.

The shank 30 includes an outer sleeve that terminates short of the outer wall of the casing, but has a spindle 33 mounted for rotation in the. sleeve and extending through the inner end thereof, with a head 34 formed on the inner end of the spindle and which extends through the opening of the adjacent walls of the casing and bolt actuating member, as clearly shown in Figure 7; The head 34 as well as the shank 21 has rounded corners or are rounded for a portion. oftheir circumference, to facilitate. free movement of the boltactuating member thereon, as will. be apparent, upon inspection of Figures 4.

and 5. r

The head 34 is likewise provided with a nar-: row recess 35; disposed in registration. with: the recess 29 and pivotally mounted within therecess 35 is, one end of a flatdetent 35.. that'has its opposite end portion.slidably-mounted. in therecess 2;9. The detent, fittingly: engages the walls. of the recesses and: couples. the shanks together, so that they can be rockedby the knobsthereoh for moving the bolt member againstthe action of its spring, through the medium of-the-actuating member, when the flat. sides of; the detent,

are, disposed. vertically, as, shown. in Figure 7; However, when the knob..218. is. turned, from the position of' Figure 7. about an angle. of ninety: degrees, the flat sides of the detent. arehorie zontal, as shown in Figure. 10., consequently. the detent cannot. move onits pivotsand thereforethe shanks cannot be-rockedfor moving thebolt member that normally has. its head. mounted within the keeper opening of; the. strike plate, with the .resultthe door is lockedaand cannot be opened. until the. detent isreturned to the posie tion of Figure '7, forallowing. rocking; movement of. the, shanks.

While the sleeve of the shank 30 is .pivotally mounted for rocking movement in. a verticalgplane only, due to the fact thatthe pivotds fixed, the

spindle is, partially. rotatably, mounted. within. the

sleeve and for that; purposethespgindle 18 .1310- vided with diametrically disposed: slots= 3.7. for. receiving the pivot pin 3 2;to "allow; for,- the, turning movement ofgthe, knob28, and it..w i1l beobvious from Figure .8, that the ends of the. slots. 31;:provide stops tolimit the turning movement of, the knob- 2.3;.within a, ninety. degree angle, so that the detent is disposed, either in the position. of.

Figure '7,- with theknob 28 horizontally arranged, or in the position of Figure 10, with the knob; 282 vertically arranged.

The key actuated means in the formasshown, includesa, cylinder locki39 of thespring pressed tumbler type. The. cylinder is mounted for. rota.- tion in the knohdl and is connectedto the spindle by any well known means, such as for'examp. ple, a pin and slot connection 41, for movement of the. spindle. 33 independently of the. cylinder. to allow the detentito be disposedto either ofhits positions, as shown in- Figures '7 andlO, by. the.

kn0b,23.,.:regardless.of whether-on not the cylinder .is .in-yitslocked; .or unlocked; positions. and the 75" detent can be disposed to its respective positions upon rotation of the cylinder through the medium of the key 59.

It is believed that it will be obvious that the lock can be readily constructed without the key actuated means, for use with inside doors, particularly bathroom doors, and in that event the knob 3i would be solid like the knob 23 and the spindle would have its inner end terminating within the sleeve. A look so constructed could be used on an inside door for locking and unlocking the same from one side only, that is by the knob 28.

It is thought from the foregoing description that the advantages and novel features of the in vention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is:

1. A door lock comprising a casing, latching means within and movable through the casing and normally held in latched position, knobs provided with shanks pivotally mounted for rocking movement and extending into the casing, said shanks being connected to the latching means for operating the latter to unlatched position upon rocking movement of either knob, and means coupling the shanks to each other and movable by one of said knobs to a position to allow said rocking movement and to another position to prevent said movement.

2. A door lock comprising a casing, latching means within and movable through the casing and normally held in latched position, knobs provided with shanks pivotally mounted for rocking movement and extending into the casing, said shanks being connected to the latching means for operating the latter to unlatched position upon rocking movement of either knob, means coupling the shanks to each other and movable by one of said knobs to a position to allow said rocking movement and to another position to prevent said movement, and key actuated means carried by the other knob for moving the coupling means to either of its positions.

3. A door lock comprising a casing, latching means within and movable through the casing and normally held in latched position, knobs provided with shanks pivotally mounted for rocking movement and extending into the casing, said shanks being connected to the latching means for operating the latter to unlatched position upon rocking movement of either knob, rotatably mounted escutcheon means having the pivot of one shank carried thereby to allow rotation of the latter shank by its knob, rotatably mounted headed means included in the other shank, and detent means coupling the headed means to the rotatably mounted shank and movable to one position by the knob of the latter shank to allow said rocking movement and to another position to prevent said movement.

4. A door lock comprising a casing, latching means within and movable through the casing and normally held in latched position, knobs provided with shanks pivotally mounted for rocking movement and extending into the casing, said shanks being connected to the latching means for operating the latter to unlatched position upon rocking movement of either knob, rotatably mounted escutcheon means having the pivot of one shank carried thereby to allow rotation of the latter shank by its knob, rotatably mounted headed means included in the other shank, means for limiting the rotation of the headed means, detent means coupling the headed means to the rotatably mounted shank and movable to one position by the knob of the latter shank to allow said rocking movement and to another position to prevent said movement, and key actuated means mounted in the other knob and connected to said headed means for moving the coupling means to either of its positions.

5. A door lock comprising a casing, latching means within and movable through the casing and normally held in latched position, knobs provided with shanks pivotally mounted for rocking movement and extending into the casing, said shanks being connected to the latching means for operating the latter to unlatched position upon rocking movement of either knob, rotatably mounted escutcheon means having the pivot of one shank carried thereby to allow rotation of the latter shank by its knob, a sleeve included in the other shank with the pivot thereof extending through the sleeve, a spindle rotatably mounted in the sleeve and having diametrically disposed slots therein with the latter pivot mounted in the slots to allow limited rotation of the spindle, a head on the spindle and having a recess therein, the rotatably mounted shank having a recess in the inner end thereof, a detent pivoted in one recess and slidably mounted in the other recess for coupling the spindle to the rotatably mounted shank, and said detent fitting the recesses and movable to one position by the knob of the latter shank to allow said rocking movement and to another position to prevent said movement.

6. A door lock comprising a casing, latching means within and movable through the casing, and normally held in latched position, knobs provided With shanks pivotally mounted for rocking movement and extending into the casing, said shanks being connected to the latching means for operating the latter to unlatched position upon rocking movement of either knob, rotatably mounted escutcheo-n means having the pivot of one shank carried thereby to allow rotation of the latter shank by its knob, a sleeve included in the other shank with the pivot thereof extending through the sleeve, a spindle rotatably mounted in the sleeve and having slots therein with the latter pivot mounted in the slots to allow limited rotation of the spindle, a head on the spindle and having a recess therein, the rotatably mounted shank having a recess in the inner end thereof, a detent pivoted in one recess and slidably mounted in the other recess for coupling the spindle to the rotatably mounted shank, said detent fitting the recesses and movable to one position by the knob of the latter shank to allow said rocking movement and to another position to prevent said movement, and key actuated means mounted in the other knob and connected to the spindle for moving said detent to either of its positions.

THOMAS W. ANDERSON. 

